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/*
* Copyright 2008, Unitils.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.unitils.dbunit;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dbunit.database.DatabaseConfig;
import static org.dbunit.database.DatabaseConfig.*;
import org.dbunit.dataset.IDataSet;
import org.dbunit.dataset.datatype.IDataTypeFactory;
import org.unitils.core.Module;
import org.unitils.core.TestListener;
import org.unitils.core.Unitils;
import org.unitils.core.UnitilsException;
import org.unitils.core.dbsupport.DbSupport;
import org.unitils.core.dbsupport.DbSupportFactory;
import static org.unitils.core.dbsupport.DbSupportFactory.getDbSupport;
import org.unitils.core.dbsupport.DefaultSQLHandler;
import org.unitils.core.dbsupport.SQLHandler;
import org.unitils.core.util.ConfigUtils;
import static org.unitils.core.util.ConfigUtils.getInstanceOf;
import org.unitils.database.DatabaseModule;
import org.unitils.dbunit.annotation.DataSet;
import org.unitils.dbunit.annotation.ExpectedDataSet;
import org.unitils.dbunit.datasetfactory.DataSetFactory;
import org.unitils.dbunit.datasetfactory.DataSetResolver;
import org.unitils.dbunit.datasetloadstrategy.DataSetLoadStrategy;
import org.unitils.dbunit.util.DataSetAssert;
import org.unitils.dbunit.util.DbUnitDatabaseConnection;
import org.unitils.dbunit.util.MultiSchemaDataSet;
import static org.unitils.util.AnnotationUtils.getMethodOrClassLevelAnnotation;
import static org.unitils.util.AnnotationUtils.getMethodOrClassLevelAnnotationProperty;
import static org.unitils.util.ModuleUtils.*;
import static org.unitils.util.ReflectionUtils.createInstanceOfType;
import static org.unitils.util.ReflectionUtils.getClassWithName;
import javax.sql.DataSource;
import java.io.File;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.sql.SQLException;
import java.util.*;
/**
* Module that provides support for managing database test data using DBUnit.
*
* Loading of DbUnit data sets can be done by annotating a class or method with the {@link DataSet} annotation. The name
* of the data set files can be specified explicitly as an argument of the annotation. If no file name is specified, it looks
* for a file in the same directory as the test class named: 'classname without packagename'.xml.
*
* By annotating a method with the {@link ExpectedDataSet} annotation or by calling the {@link #assertDbContentAsExpected}
* method, the contents of the database can be compared with the contents of a dataset. The expected dataset can be
* passed as an argument of the annotation. If no file name is specified it looks for a file in the same directory
* as the test class that has following name: 'classname without packagename'.'test method name'-result.xml.
*
* This module depends on the {@link DatabaseModule} for database connection management.
*
* @author Filip Neven
* @author Tim Ducheyne
*/
public class DbUnitModule implements Module {
/* The logger instance for this class */
private static Log logger = LogFactory.getLog(DbUnitModule.class);
/**
* Map holding the default configuration of the dbunit module annotations
*/
protected Map, Map> defaultAnnotationPropertyValues;
/**
* Objects that DbUnit uses to connect to the database and to cache some database metadata. Since DBUnit's data
* caching is time-consuming, this object is created only once and used throughout the entire test run. The
* underlying JDBC Connection however is 'closed' (returned to the pool) after every database operation.
*
* A different DbUnit connection is used for every database schema. Since DbUnit can only work with a single schema,
* this is the simplest way to obtain multi-schema support.
*/
protected Map dbUnitDatabaseConnections = new HashMap();
/**
* The unitils configuration
*/
protected Properties configuration;
/**
* Initializes the DbUnitModule using the given Configuration
*
* @param configuration The config, not null
*/
@SuppressWarnings("unchecked")
public void init(Properties configuration) {
this.configuration = configuration;
defaultAnnotationPropertyValues = getAnnotationPropertyDefaults(DbUnitModule.class, configuration, DataSet.class, ExpectedDataSet.class);
}
/**
* No after initialization needed for this module
*/
public void afterInit() {
}
/**
* Gets the DbUnit connection or creates one if it does not exist yet.
*
* @param schemaName The schema name, not null
* @return The DbUnit connection, not null
*/
public DbUnitDatabaseConnection getDbUnitDatabaseConnection(String schemaName) {
DbUnitDatabaseConnection dbUnitDatabaseConnection = dbUnitDatabaseConnections.get(schemaName);
if (dbUnitDatabaseConnection == null) {
dbUnitDatabaseConnection = createDbUnitConnection(schemaName);
dbUnitDatabaseConnections.put(schemaName, dbUnitDatabaseConnection);
}
return dbUnitDatabaseConnection;
}
/**
* This method will first try to load a method level defined dataset. If no such file exists, a class level defined
* dataset will be loaded. If neither of these files exist, nothing is done.
* The name of the test data file at both method level and class level can be overridden using the
* {@link DataSet} annotation. If specified using this annotation but not found, a {@link UnitilsException} is
* thrown.
*
* @param testMethod The method, not null
* @param testObject The test object, not null
*/
public void insertDataSet(Method testMethod, Object testObject) {
try {
MultiSchemaDataSet multiSchemaDataSet = getDataSet(testMethod, testObject);
if (multiSchemaDataSet == null) {
// no dataset specified
return;
}
DataSetLoadStrategy dataSetLoadStrategy = getDataSetLoadStrategy(testMethod, testObject.getClass());
insertDataSet(multiSchemaDataSet, dataSetLoadStrategy);
} catch (Exception e) {
throw new UnitilsException("Error inserting test data from DbUnit dataset for method " + testMethod, e);
} finally {
closeJdbcConnection();
}
}
/**
* Inserts the default dataset for the given test class into the database
*
* @param testClass The test class for which the default dataset must be loaded
*/
public void insertDefaultDataSet(Class testClass) {
DataSetFactory dataSetFactory = getDefaultDataSetFactory();
String[] dataSetFileNames = new String[]{getDefaultDataSetFileName(testClass, dataSetFactory.getDataSetFileExtension())};
insertDataSet(testClass, dataSetFileNames);
}
/**
* Inserts the dataset consisting of the given list of files into the database
*
* @param testClass The test class for which the dataset must be loaded
* @param dataSetFileNames The names of the files that define the test data
*/
public void insertDataSet(Class testClass, String... dataSetFileNames) {
DataSetFactory dataSetFactory = getDefaultDataSetFactory();
DataSetLoadStrategy dataSetLoadStrategy = getDefaultDataSetLoadStrategy();
MultiSchemaDataSet dataSet = getDataSet(testClass, dataSetFileNames, dataSetFactory);
insertDataSet(dataSet, dataSetLoadStrategy);
}
/**
* Inserts the test data coming from the given DbUnit dataset file
* using the default {@link DataSetLoadStrategy} and {@link DataSetFactory} class.
*
* @param dataSetFile The test data set, not null
*/
public void insertDataSet(File dataSetFile) {
DataSetFactory dataSetFactory = getDefaultDataSetFactory();
DataSetLoadStrategy dataSetLoadStrategy = getDefaultDataSetLoadStrategy();
MultiSchemaDataSet multiSchemaDataSet = dataSetFactory.createDataSet(dataSetFile);
insertDataSet(multiSchemaDataSet, dataSetLoadStrategy);
}
/**
* Inserts the test data coming from the given DbUnit dataset file.
*
* @param dataSetFile The test data set, not null
* @param dataSetFactoryClass The class of the factory that must be used to read this dataset
* @param dataSetLoadStrategyClass The class of the load strategy that must be used to load this dataset
*/
public void insertDataSet(File dataSetFile, Class dataSetFactoryClass, Class dataSetLoadStrategyClass) {
DataSetLoadStrategy dataSetLoadStrategy = createInstanceOfType(dataSetLoadStrategyClass, false);
DataSetFactory dataSetFactory = getDataSetFactory(dataSetFactoryClass);
MultiSchemaDataSet multiSchemaDataSet = dataSetFactory.createDataSet(dataSetFile);
insertDataSet(multiSchemaDataSet, dataSetLoadStrategy);
}
/**
* Loads the given multi schema dataset into the database, using the given loadstrategy
*
* @param multiSchemaDataSet The multi schema dataset that is inserted in the database
* @param dataSetLoadStrategy The load strategy that is used
*/
protected void insertDataSet(MultiSchemaDataSet multiSchemaDataSet, DataSetLoadStrategy dataSetLoadStrategy) {
try {
for (String schemaName : multiSchemaDataSet.getSchemaNames()) {
IDataSet schemaDataSet = multiSchemaDataSet.getDataSetForSchema(schemaName);
dataSetLoadStrategy.execute(getDbUnitDatabaseConnection(schemaName), schemaDataSet);
}
} finally {
closeJdbcConnection();
}
}
/**
* Compares the contents of the expected DbUnitDataSet with the contents of the database. Only the tables and columns
* that occur in the expected DbUnitDataSet are compared with the database contents.
*
* @param testMethod The test method, not null
* @param testObject The test object, not null
*/
public void assertDbContentAsExpected(Method testMethod, Object testObject) {
try {
// get the expected dataset
MultiSchemaDataSet multiSchemaExpectedDataSet = getExpectedDataSet(testMethod, testObject);
if (multiSchemaExpectedDataSet == null) {
// no data set should be compared
return;
}
// first make sure every database update is flushed to the database
getDatabaseModule().flushDatabaseUpdates(testObject);
DataSetAssert dataSetAssert = new DataSetAssert();
for (String schemaName : multiSchemaExpectedDataSet.getSchemaNames()) {
IDataSet expectedDataSet = multiSchemaExpectedDataSet.getDataSetForSchema(schemaName);
IDataSet actualDataSet = getActualDataSet(schemaName);
dataSetAssert.assertEqualDbUnitDataSets(schemaName, expectedDataSet, actualDataSet);
}
} finally {
closeJdbcConnection();
}
}
/**
* Gets the actual data set for the given schema.
*
* @param schemaName The schema to get the data set for, not null
* @return The actual data set, not null
*/
protected IDataSet getActualDataSet(String schemaName) {
try {
return getDbUnitDatabaseConnection(schemaName).createDataSet();
} catch (Exception e) {
throw new UnitilsException("Unable to get actual data set for schema " + schemaName, e);
}
}
/**
* Using the values of the method-level or class-level {@link DataSet} annotations, returns the data set for the
* given test method. If no method-level or class-level {@link DataSet} annotation is found, null is returned.
* If a method-level {@link DataSet} annotation is found this will be used, else the class-level will be used.
*
* The value of the found annotation determines which files need to be used for the dataset. If one or more filenames are
* explicitly specified, these names will be used. Filenames that start with '/' are treated absolute. Filenames
* that do not start with '/', are relative to the current class.
* If an empty filename ("") is specified, this method will look for a file named 'classname'.xml.
* {@link #getDefaultDataSetFileName}).
*
* If a file is not found or could not be loaded (but was requested, because there is an annotation), an exception
* is thrown.
*
* @param testMethod The test method, not null
* @param testObject The test object, not null
* @return The dataset, null if no {@link DataSet} annotation is found.
*/
public MultiSchemaDataSet getDataSet(Method testMethod, Object testObject) {
Class testClass = testObject.getClass();
DataSet dataSetAnnotation = getMethodOrClassLevelAnnotation(DataSet.class, testMethod, testClass);
if (dataSetAnnotation == null) {
// No @DataSet annotation found
return null;
}
// Create configured factory for data sets
DataSetFactory dataSetFactory = getDataSetFactory(DataSet.class, testMethod, testClass);
// Get the dataset file name
String[] dataSetFileNames = dataSetAnnotation.value();
if (dataSetFileNames.length == 0) {
// empty means, use default file name, which is the name of the class + extension
dataSetFileNames = new String[]{getDefaultDataSetFileName(testClass, dataSetFactory.getDataSetFileExtension())};
}
return getDataSet(testClass, dataSetFileNames, dataSetFactory);
}
/**
* Returns the {@link MultiSchemaDataSet} that represents the state of a number of database tables after the given
* Method has been executed.
*
* @param testMethod The test method, not null
* @param testObject The test object, not null
* @return The dataset, null if there is no data set
*/
public MultiSchemaDataSet getExpectedDataSet(Method testMethod, Object testObject) {
Class testClass = testObject.getClass();
ExpectedDataSet expectedDataSetAnnotation = getMethodOrClassLevelAnnotation(ExpectedDataSet.class, testMethod, testClass);
if (expectedDataSetAnnotation == null) {
// No @ExpectedDataSet annotation found
return null;
}
// Create configured factory for data sets
DataSetFactory dataSetFactory = getDataSetFactory(ExpectedDataSet.class, testMethod, testClass);
// Get the dataset file name
String[] dataSetFileNames = expectedDataSetAnnotation.value();
if (dataSetFileNames.length == 0) {
// empty means use default file name
dataSetFileNames = new String[]{getDefaultExpectedDataSetFileName(testMethod, testClass, dataSetFactory.getDataSetFileExtension())};
}
return getDataSet(testMethod.getDeclaringClass(), dataSetFileNames, dataSetFactory);
}
/**
* Creates the dataset for the given file. Filenames that start with '/' are treated absolute. Filenames that
* do not start with '/', are relative to the current class.
*
* @param testClass The test class, not null
* @param dataSetFileNames The names of the files, (start with '/' for absolute names), not null, not empty
* @param dataSetFactory DataSetFactory responsible for creating the dataset file
* @return The data set, null if the file does not exist
*/
protected MultiSchemaDataSet getDataSet(Class testClass, String[] dataSetFileNames, DataSetFactory dataSetFactory) {
List dataSetFiles = new ArrayList();
DataSetResolver dataSetResolver = getDataSetResolver();
for (String dataSetFileName : dataSetFileNames) {
File dataSetFile = dataSetResolver.resolve(testClass, dataSetFileName);
dataSetFiles.add(dataSetFile);
}
logger.info("Loading DbUnit data set. File names: " + dataSetFiles);
return dataSetFactory.createDataSet(dataSetFiles.toArray(new File[dataSetFiles.size()]));
}
/**
* Creates the DbUnit dataset operation for loading a data set for the given method. If a value for loadStrategy is
* found on an annotation, this class is used, otherwise the configured default class will be used.
*
* @param testMethod The method, not null
* @param testClass The test class, not null
* @return The DbUnit operation, not null
*/
@SuppressWarnings({"unchecked"})
protected DataSetLoadStrategy getDataSetLoadStrategy(Method testMethod, Class testClass) {
Class dataSetOperationClass = getMethodOrClassLevelAnnotationProperty(DataSet.class, "loadStrategy", DataSetLoadStrategy.class, testMethod, testClass);
dataSetOperationClass = (Class) getClassValueReplaceDefault(DataSet.class, "loadStrategy", dataSetOperationClass, defaultAnnotationPropertyValues, DataSetLoadStrategy.class);
return createInstanceOfType(dataSetOperationClass, false);
}
/**
* Creates a new instance of dbUnit's IDatabaseConnection
*
* @param schemaName The schema name, not null
* @return A new instance of dbUnit's IDatabaseConnection
*/
protected DbUnitDatabaseConnection createDbUnitConnection(String schemaName) {
// A DbSupport instance is fetched in order to get the schema name in correct case
DataSource dataSource = getDatabaseModule().getDataSourceAndActivateTransactionIfNeeded();
SQLHandler sqlHandler = new DefaultSQLHandler(dataSource);
DbSupport dbSupport = getDbSupport(configuration, sqlHandler, schemaName);
// Create connection
DbUnitDatabaseConnection connection = new DbUnitDatabaseConnection(dataSource, dbSupport.getSchemaName());
DatabaseConfig config = connection.getConfig();
// Make sure that dbunit's correct IDataTypeFactory, that handles dbms specific data type issues, is used
IDataTypeFactory dataTypeFactory = getInstanceOf(IDataTypeFactory.class, configuration, dbSupport.getDatabaseDialect());
config.setProperty(PROPERTY_DATATYPE_FACTORY, dataTypeFactory);
// Make sure that table and column names are escaped using the dbms-specific identifier quote string
if (dbSupport.getIdentifierQuoteString() != null)
config.setProperty(PROPERTY_ESCAPE_PATTERN, dbSupport.getIdentifierQuoteString() + '?' + dbSupport.getIdentifierQuoteString());
// Make sure that batched statements are used to insert the data into the database
config.setProperty(FEATURE_BATCHED_STATEMENTS, "true");
// Make sure that Oracle's recycled tables (BIN$) are ignored (value is used to ensure dbunit-2.2 compliancy)
config.setProperty("http://www.dbunit.org/features/skipOracleRecycleBinTables", "true");
return connection;
}
/**
* Closes (i.e. return to the pool) the JDBC Connection that is currently in use by the DbUnitDatabaseConnection
*/
protected void closeJdbcConnection() {
try {
for (DbUnitDatabaseConnection dbUnitDatabaseConnection : dbUnitDatabaseConnections.values()) {
dbUnitDatabaseConnection.closeJdbcConnection();
}
} catch (SQLException e) {
throw new UnitilsException("Error while closing connection.", e);
}
}
/**
* Gets the name of the default testdata file at class level The default name is constructed as
* follows: 'classname without packagename'.xml
*
* @param testClass The test class, not null
* @param extension The configured extension of dataset files
* @return The default filename, not null
*/
protected String getDefaultDataSetFileName(Class testClass, String extension) {
String className = testClass.getName();
return className.substring(className.lastIndexOf(".") + 1) + '.' + extension;
}
/**
* Gets the name of the expected dataset file. The default name of this file is constructed as
* follows: 'classname without packagename'.'testname'-result.xml.
*
* @param method The test method, not null
* @param testClass The test class, not null
* @param extension The configured extension of dataset files, not null
* @return The expected dataset filename, not null
*/
protected String getDefaultExpectedDataSetFileName(Method method, Class testClass, String extension) {
String className = testClass.getName();
return className.substring(className.lastIndexOf(".") + 1) + "." + method.getName() + "-result." + extension;
}
/**
* @return The default {@link DataSetFactory} class as configured in unitils
*/
@SuppressWarnings("unchecked")
protected DataSetFactory getDefaultDataSetFactory() {
Class dataSetFactoryClass = getClassWithName(getAnnotationPropertyDefault(DbUnitModule.class, DataSet.class, "factory", configuration));
return getDataSetFactory(dataSetFactoryClass);
}
/**
* Get the configured DataSetFactory for the given method
*
* @param annotationClass The class of the annotation, i.e. DataSet.class or ExpectedDataSet.class
* @param testMethod The method for which we need the configured DataSetFactory
* @param testClass The class that is looked for class-level annotations
* @return The configured DataSetFactory
*/
@SuppressWarnings("unchecked")
protected DataSetFactory getDataSetFactory(Class annotationClass, Method testMethod, Class testClass) {
Class dataSetFactoryClass = getMethodOrClassLevelAnnotationProperty(annotationClass, "factory", DataSetFactory.class, testMethod, testClass);
dataSetFactoryClass = (Class) getClassValueReplaceDefault(annotationClass, "factory", dataSetFactoryClass, defaultAnnotationPropertyValues, DataSetFactory.class);
return getDataSetFactory(dataSetFactoryClass);
}
/**
* Creates and initializes a data set factory of the given type.
*
* @param dataSetFactoryClass The type, not null
* @return The {@link DataSetFactory} with the given class
*/
protected DataSetFactory getDataSetFactory(Class dataSetFactoryClass) {
DataSetFactory dataSetFactory = createInstanceOfType(dataSetFactoryClass, false);
dataSetFactory.init(configuration, getDefaultDbSupport().getSchemaName());
return dataSetFactory;
}
/**
* @return The default {@link DataSetLoadStrategy} class as configured in unitils
*/
@SuppressWarnings("unchecked")
protected DataSetLoadStrategy getDefaultDataSetLoadStrategy() {
Class dataSetLoadStrategyClassName = getClassWithName(getAnnotationPropertyDefault(DbUnitModule.class, DataSet.class, "loadStrategy", configuration));
return createInstanceOfType(dataSetLoadStrategyClassName, false);
}
/**
* @return The data set resolver, as configured in the Unitils configuration
*/
protected DataSetResolver getDataSetResolver() {
return ConfigUtils.getConfiguredInstanceOf(DataSetResolver.class, configuration);
}
/**
* @return The default DbSupport (the one that connects to the default database schema)
*/
protected DbSupport getDefaultDbSupport() {
DataSource dataSource = getDatabaseModule().getDataSourceAndActivateTransactionIfNeeded();
SQLHandler sqlHandler = new DefaultSQLHandler(dataSource);
return DbSupportFactory.getDefaultDbSupport(configuration, sqlHandler);
}
/**
* @return Implementation of DatabaseModule, on which this module is dependent
*/
protected DatabaseModule getDatabaseModule() {
return Unitils.getInstance().getModulesRepository().getModuleOfType(DatabaseModule.class);
}
/**
* @return The TestListener object that implements Unitils' DbUnit support
*/
public TestListener getTestListener() {
return new DbUnitListener();
}
/**
* Test listener that is called while the test framework is running tests
*/
protected class DbUnitListener extends TestListener {
@Override
public void beforeTestSetUp(Object testObject, Method testMethod) {
insertDataSet(testMethod, testObject);
}
@Override
public void afterTestMethod(Object testObject, Method testMethod, Throwable throwable) {
if (throwable == null) {
assertDbContentAsExpected(testMethod, testObject);
}
}
}
}
